While on location at a special effects house, Latino Review spied design illustrations for a younger version of X-Men's Beast. When they asked what it was, they were told that it was a design for the 'Magneto' movie.
To confirm, they asked if the Beast was to appear in the 'Magneto' film and their source at the location did confirm it.
"The picture showed a younger guy in the Beast getup leaping down. He was in the full blue costume with his long tail and you couldn't mistake him for anything other than Beast. The picture also had 'Magneto' written in the upper corner. Like I said, I was only able to see it for a few seconds, but it did not look like a computer rendered picture, it looked like an actor in full makeup. Nevertheless, Beast IS in the movie."